linux-kernel - Re: [RFC PATCH v3 16/18] gpu: host1x: mipi: Split tegra_mipi_calibrate and tegra_mipi

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Message-ID: <ea3d2bb0-bf35-dfdf-ed1f-7656a9558072@gmail.com>
Date:   Fri, 17 Jul 2020 23:14:52 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sowjanya Komatineni <skomatineni@...dia.com>,
        thierry.reding@...il.com, jonathanh@...dia.com, frankc@...dia.com,
        hverkuil@...all.nl, sakari.ailus@....fi, robh+dt@...nel.org,
        helen.koike@...labora.com
Cc:     sboyd@...nel.org, gregkh@...uxfoundation.org,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org
Subject: Re: [RFC PATCH v3 16/18] gpu: host1x: mipi: Split
 tegra_mipi_calibrate and tegra_mipi_wait

17.07.2020 18:41, Sowjanya Komatineni пишет:
...
>> Also, what about the auto-calibration? Isn't it needed to be enabled for
>> CSI?
> STARTCAL does one time calibration and with AUTOCAL calibration will be
> triggered periodically.
> 
> For pads PULLUP/PULLDN/TERM impedance calibration, we only need one-time
> calibration on pads power up.
> 
> We always use one time pads calibration for CSI.

Alright, thank you for the clarification!